Calculating machine



G. A. SEIB.

CALCULATING MACHINE.

APPLICATION HLED JUNE 11. 1921.

Patented July 25, 1922..

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GEORGE SEIB, OF ILION, NEW YORK,

'ASSIGNOR TO REMINGTON ACCOUNTING MACHINE CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEWYORK.

CALCULATING MACHINE.

Application filed June 11,

Q 0 all about it may concern Be it known that I, fluonon A. there, citi- Zen of the United States, and resident of llion, in the county of Herkimer and State of New York, have invented certain new and useful Improvements in Calculating Machines, of which the following is a specification.

My invention relates to calculating machines and is shown embodied in the present instance in a combined typewriting and calculating machine of the charaete known on the market as the RemingtonlVahl machine, and one style of which shown, for example, in the patent to John C. /Vahl, No. 1,270,471, dated June 25, 1918, although it should be understood that the invention is not restricted to its embodiment in such machines.

In the liemingto-u-l fahl machine, the vertical totalizer carrying truck is connected to the typewriter carriage to travel with the latter, the character of the connections between the carriage and truck being such that a slight movement of limited extent of the truck relatively to the carriage and trans versely' of the line of travel of the truck is permitted in order to automatically take care of or compensate for any lack of absolute straightncss in the truck itself or other inaccuracies of manufacture. lit sometimes occurs that certain diiiioulties which will hereinafter appear are encountered by reason of this relative movement of-the truck in certain directions. a

One of the main objects of my invention is to overcome these difficultiesheretofore encountered and to provide means for controlling or to aid in controlling, this relative movement of the truck y A further object of my invention is to provide simple, strong and effective means of the character specified which may he read ily applied to a Remington-\Vahl machine without modifying, or materially modifying, the structural features of said machine as they now exist.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrange ments of parts, and combinations of devices set forth in the following specification and particularly pointed out in the appended claims. 1

In the accompanying drawings wherein Specification of Letters Patent.

Patented July 25, 1922.

1921. Serial No. 476,767.'

the same with parts in section and parts omitted. Fig. 3 is a detail fragmentary front view partly in section showing the usual connections between the truck and the carriage at one end of the latter.

Fig. t is a detail, fragmentary, perspective view partly in section and showing one of my improved link connections between the truck and the typewriter carriage.

In the drawings 1 have shown only so much of a Remington- 51111 machine as may be necessary to arrive at an understanding of my invention in its embodimenttherein.

Said machine comprises a typewriter of which there'is shown in the drawing little except a portion of the carriage 1, its forward fixed guide rail 52, the top plate 3 and a front corner post a. The carriage is mounted in the usual manner to travel over the top plate from side to side of the machine and is sup ported 'by the fixed guide rails. The actuator for the computer has its stationary framework 5 supported from the frame of the typewriting machine by angle brackets (i secured to the top plate by screws 7; screw bolts 8 and nuts 9 connecting the angle brackets to the actuator frame. Sheet metal arms or brackets 10 are rigidly securedin the usual manner to the carriage 1 and project forward therefrom. The shouldered screw 11 and the shouldered screw stud 12 and nut l l constitute part of the usual means by which the brackets are secured to the car- The forward end part of each bracket 10 is formed with a depending ear let, in a tapped opening in which is received the threaded end. of a'headed shouldered screw 15, that passes through a vertically disposed slot 16 in a bracketarm 17 that is secured to and in effect constitutes part of totalizer truck 18. From an inspectionof Fig. 2 it will be seen that the distance between the front face of each car 14 and the head of the associate screw 15 is greater than the thickness of thebracket arm 17 to permit a sligl'it tore-and-att movement of the said arm 17 and of that end oi. the totalizer truck connected. therewith. The pin and slot connection 1.516 between the carriage and truck also permits the latter to receive a limited up and down movement of slight extent relatively to the carriage, but prevents any movement of the trucl relatively to the carriage inv the direction ol: the travel oi the latter and. therefore, compels the carriage and truck to more accurately together in the direction of the feed or travel oi. the 'arriage. The purpose of the looseness in the connections between the carriage and compi rer or totalizer truck will hereinafter more clearly appear. The truck also comprises a casting 18 secured by nuts l9 and bolts to the bracket arms 1?. The casting is termed with a dove-tail cross s"c tion. indicated at 20, to lit corresponding openings in the side plates of each totalizer 21, and the totalizers are thus supported on the truck. Each totalizer is held in its adjusted position along the truck by handreleased detent or catch 22 which has a teeth that engages between teeth on the upper edge of a rack bar 23 carried by and extend ing loi'igitudinally of the trurlr. .iiny de sired number of detaehal'ile totalizers may be carried by the truck and each. contains computing inechz'niisin inch'uling a series of gear wheels 24- which are adapted to mesh, one at a time, with a master wheel 25. This master wheel is carried by the fixed actuator frame and constitutes part o1": the computer act-uniting mechanism driven by the numeral keys of the typewriter.

As the typewriter carriage moves toward the left in the operation of writing and computing a number, the wheels 24. move one atter another into mesh with the master wheel 25. Said gears 2a. and the totalizers in which they are supported, must oi? necessity be guided across said master Wheel with a considerable degree of precision, as other- Wise the teeth of the wheels 24; might collide with the teeth of the master wheel and if the wheels 24 and 253 do not mesh properly the operation may be hard or otherwise imperfect. in the Remingtmnii aljii machine. as heretofore cmastructed, the totalicncr trio-i: has been. loosely connected with the arms ll) by means of the pin and slot connections l5--16 in the manner hereinbetore described. The truck by reason of this connection has a small limited amount of freedom of movement at its ends both up and down and also front and back with respect to the ends oi the brackets 10. The accurate guiding of the truck is effected the middle of the machine substantially in the front to rear vertical plane of the master wheel 25. this being the point at which accuracy is required. To this end the trucl: has been given a cross section. like that indicated in Fig. 1 so as to i. d b

presses against a roller or wheel 3 l he traclrway 28 is at the top oi? the truck and presses 't'orward against a roller l. somewhat similarly to the rollers :29 and 30; all these rollers 29. 30 and Bi being carried by the fixed actuator frame 5 inv the 'iore-and-att vertical plane or the master wheel. In prac tice, the bearing: for each. ot said rollers is so coi'istructed asto ailf'ord a line adjustinent ol' the roller transverse to its axis. so that, in manufacturing the nuu-hine, the truck can be adjusted to cause the gears 24 to mesh accurately witl the master wheel 52 In addition to the rollers 29. 30 and lit. the Remington-lVahl machine includes an adjustable stop enacting with the truck to limit its upward displacement in the plane of the master wheel. Said machine also includes an adjustable stop coactingjg with the truck in. the same plane to limit the rcarward displacement of the upper part oi? the hiilC/ls'. Those stops are not shown in the accompanyinn' drawiiurs except in tar as the stop for limit-inn the upward movement of the truck is indicated at (I. in Fig". but said stops are illustrated in the hero n-- bet-ore mentioned lVahl patent. The shoulde b at the rear edggge of the track .26 coacis with the side oi. the roller 29 to limit the "forward dis lacement oi. the truclc. at the lower end thereof. The said stops and roll c all carried by the fluid actuator 't'rame 5 and locatedv in the plane ol': the master wheel. The rollers 29. 30 and 31 supply a means tor guiding" accurately that portion. of the truck Which. at any given moment is passing; the master wheel and insure a proper intermeshing' of any individual totalizer wheel 2i which is for the moment brought, or is about to be brought, into ro opcrative relation with the master wheel.

It will be observed that the center oi"? gravity of the truch' is a. little :lorwa rd oi the roller 25) by which the weight oi. said. truck is supported, and this is especially so when several totalizaers are mounted and project forward therefrom. so that there is a constant pressure due to the weight ol. the parts baclnva-rd on the lower back roller 3 and forward on the upper front roller 31. in some instances a number of totalizers are mounted on the truck and the overhanging weight then becomes conside'ii'ablc and ithas been found that sometimes the upper front roller 81. co-operating with the track ray 28 fails to turn. Said traclrway, siidine, the roller 31, gradua y causes wearrthe roller someh warn so that has to be replaced with a new one. The coacting face of the track 28 also becomes unduly and unevenly worn or pitted, and the wear on this roller and track allows the upper part ofthe truck to swing forward and destroy the nice adjustment and relation between the totalizer wheels 24 and the master wheel 25.

The immediate object of my presentinvention is to overcome this difiiculty without detracting from the loose connection between the carriage and truck which enables the latter to move up and down at either end relatively to the carriage and to attain any advantages derived from such move ment.

To these ends I employ in the present instance two substai'ltially horizontally disposed non-elastic restraining members or links 32 which extend fore-and-aft of the machine, one near each end of the truck and each connected at its front end to the upper part of the truck and at its rear end to the typewriter carriage. Each link 32 is pivoted at its rear end on a shouldered pivot screw 33 threaded into a tapped opening in a plate 34-. The plates 3% are substituted for the shorter plates usually provided on the ends of the scale-supporting member on the typewriter carriage, and which plates are secured thereto by screws 36; these same screws being utilized in the present instance to secure the plates 34 in place. The forward end of each link 32 is connected by a shouldered pivot screw 37 to a bracket or block 38 deta-chably connected with the truck. In the present instance the lower end portion of each bracket 38 is bifurcated at 39 to straddle and it on an upwardly projecting flange 40 of the truck and on which the forwardly facing track 28 is lbrmed. The rear depending arm formed by the bifurcation in each block or bracket 38 is tapped to receive a set screw 41, the forward end of whichbears against the flange .20 and firmly secures the bracket to the truck.

Adjustable means are provided for each link, and in practicethese links are so adjusted that the track 28 barely touches the roller 31. In the present instance this is accomplished by making each link a twopart link, one part being formed with an internally threaded socket 42, to receive an externally threaded end portion 43. ofthe other part. \Vhcn either end of a link is detached the part at the detached end may be turned on its companion member to effect a lengthening or shortening of the link. In practice I prefer to adjust the links 32 so thatthe track 28 barely touches the roller 31 and thus restrains the truck against forward movement at the upper end thereof. This results in relieving the roller 31 and track 28 of the weightordinarily placed thereon and accordingly reduces the wear on said parts. The tendency of the upper end of the truck to move forward by the weight of the overhanging totalizers carried thereby is exerted longitudinally of the independently .pivoted n0n-yielding links 32 and against the pivots 33 by which they are anchored to the typewriter carriage. It will be seen that while the links 32 restrain the truck against forward movement at its upper end, so as to relieve the track 28 and the roller 31 from receiving the full force of the forwardly directed thrust of the loaded truck, said links do not interfere with the freedom of the truck to move up and down at either end thereof, and thus regulate itself automatically.

It will be observed that the construction is such that the links 32 may be readily applied to different forms of Remington-Wald machines now on the market without modifying, or materially modifying, the structural featuresof said machlnes as they now GXlSt, the only actual change required in such machines being the substitution of the plates 3% for those usually employed.

lVhen I referherein to the members 32 as links I employ said term in its ordinary meaning to indicate non-elastic members of the general character shown.

Various changes may be made without departing from my invention.

\Vhat I claim as new and desire to secure by Letters Patent, isl w 1. In a computing machine, the combination of a. carriage, a totalizer truck, means for connecting the truck to move with the carriage but enabling the truck to have a limited movement relatively to the carriage transversely of the line of travel of the truck, bearing rollers which guide the truck, and non-elastic links intermediate said carriage and truck.

2. In a computing machine, the combination of a carriage, a totalizer truck, means for connecting the truck to move with the carriage but enabling the truck to have a limited movement. relatively to the carriage transversely of the line of travel of the truck, bearing rollers which guide the truck, and two links which extendfore and aft of the machine, each link being pivoted at its front end to the truck and at its rear end to the carriage;

In acomputing machine, the combination of a carriage, a totalizer truck, means for connecting the truck to move with the carriage but enabling the truck to have a limited movement relatively to the carriage 4. In a computing machine, the combination oi a carriage, a totalizer truck, means for connecting the truck to move with the carriage but enabling" the truck to have a limited movement relatively to the carriage transversely of the line ol" travel of the truck, bearing rollers which guide the truck, and a plurality of two-part links connecting the truck and carriage, the parts of each link being united by an adjustable connec tion whereby the length of each link may he varied at will.

5. in a computing machine, the combination of a carriage, a totalizer truck, means iFOI' connecting the truck to more with the carriage but enabling the truck to have a limited movement relatively to the carriage transversely oi the line of travel of the truck. bearing rollers which guide the truck, and two non-elastic restraining members, connecting the carriage and truck and pivoted to each of them, said members permitting a movement ot the truck relatively to the carriage in one direction but restraining such a relative movement at the truck in another direction.

6. In a, computing machine, the combina tion of a carriage, a totalizer truck, means for connecting the truck to move with the carriage but ei'1a'bling the truck to have a limited movement relatively to the carriage transversely of the line of travel. of the truck, hearing; rollers which guide the truck, and two non-elastic restraining members which extend iore and aft of the machine and each of which is pivoted independently of the other at its forward end to the upper portion of the truck, each link being pivoted in dependently oi? the other at its rear end on the carriage, whereby the truck may receive an up and down movement relatively to the carriage without interference from said links but positively restrained by the latter from a :torward relative movement.

T. In a computing machine, the combination of a carriage, a totalizer truck, means for connecting the truck to move with the carriage but enabling the truck to have a limited movement relatively to the carriage transversely of the line of travel (it the truck, bearing rollers which guide the truck, and two restraining members which connect the truck and carriage and which. are pivoted to both, each member being nonyielding lengthwise or intermediate its points of pivotal connection, thereby restraining a movement of the truck relati\'*ely to the carriage in one direction but permitting a relative movement of the truck in another direction by reason of the pivotal movement of said members.

8. In a computing machine, the combination of a carriage, a totalizer truck, a totalizer carried thereby, a master wheel for said totalizer, bearing, rollers for guiding said truck, and means for connecting the carriage and truck to travel together and tor permitting a movement of the latter rela tively to the carriage in one direction and for positively restraining it against movement in another direction, said means comprising pivoted links connecting the carriage and truck.

9. In a computing machine, the (Oll'll'Jll'Hltion of a carriage, a totalizer truck. a totalizcr carried thereby, a master wheel for said totalizer, bearing rollers for guiding said truck, means for connecting; the carriage and truck to travel together and for permitting: a movement of the latter relatively to the carriage in One direction and for positively restraining it against movement in an other direction, said means comprising pivoted links connecting the carriage and truck, and adjusting means for said links.

10. In a computing machine, the combination oi a carriage, a totalizer truck, a totalizer carried thereby, a master wheel, for said totalizer, bearing rollers for guiding said truck, and means for connecting the carriage and truck to travel together and for permitting a movement oi. the latter relatively to the carriage in one direction and for positively restraining it against movement in another direction, said means comprising a pair of parallel substantially horizontally disposed links which extend fore and aft of the machine and connect the carriage and truck, each link beingpivoted at its forward end to the upper portion oi? the truck and at its rear end to the carriage.

ii. In a computing machine, the coinliination of a carriage, a totalizer truck, a total- 'izer carried thereby, a master wheel for said 'totalizer, hearing rollers for guiding said truck, and means for connecting the carriage and truck to travel together and for permit ting a movement of. the latter relatively to the carriage in one direction and for posi 'tively restraining it against movement in an other direction, said means comprising a pair of parallel substantially horizontally disposed links which extend "tore and aft of the machine and are pivoted to and connect the carriage and truck, each link being a twopart link, and a tl'ireaded connection between the parts of each link so that it may be lengthened or shortened at will.

Signed at Ilion, in the county of tlerkimer and State of New York, this 9th day of June, A. D. 1921.

GEORGE A. SEIB. Witnesses LINNIE F. BURNETT,

W. H. MACMILLAN. 

